peters



f. w. PETERS. VISE.

APPLICATION FILED MAY Il |918.

Patented De. 2, 1919.

l 2 SHEETS-SHEET 2.

sra Es ar Errea.

FREDERICK W. PETERS, OF WEST IARK, OHIO, ASSIGNOR TO THE PARAGONMACHINE, TOOL & MANUFACTURING COMPANY, Ol CLEVELAND, OHIO, A CORPORATION0F i OHIO.

` VISE.

)Patented Dec. 2, 1919.

Application filed May 11, 1918. Serial No. 233,981.

To @ZZ wwm t may concern:

Beit .known that I, FREDERICK W. PETERS, a citizen of the United States,residing at Test Park, in the countyrof Cuyahoga and Statev of Ohio,have invented a certain new and useful Improvement in Vises, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings.

This invention relates to clamping de vices, such as vises, and has forits general object so to construct and operate the movable memberthereof as to ena-blel the convenient and positive manipulation of suchpartv for the purpose of clamping and un- -clamping various articlesupon which it is to operate. n v I A 'furtherpand more 'limited ob]ectof the invention is to provide a device of this character with meanswhereby the movable jaw may be conveniently brought into operativerelation with the article to be clamped, after which it may be furtherand more securely clamped against such article through the manipulationof the handle and may afterwardbe disengaged from such article andopened in an extremely ,effective Vand convenient manner. I secure theseobjects in and through the Vconstruction and arrangement of partsillustrated in the drawings forming part hereof wherein Figure 1represents a central longitudinal sectional view througha vise embodyingmy invention, certain parts being shown in elevation and the p'awlbein'gshown in locking position; Fig. 2 is a view corresponding to theline 2-#2 of Fig. 1 and looking in the direction `of the arrows. Fig. 3a longitudinal sectional view corresponding substantially to the line3'-3 of Fig. 2 and looking in the direction .ofthel arrows, the Apartsbeing shown in fixed Vj aw 3. The bed-plate is provided with a ratchetor rack 4, secured in any convenient manner within a recess extendinglongitudinally of the bedplate` and located about Y midway between thesides of such bed plate,

the saidlratchet orrack having teeth 5 eX- portion 61- therebeneath"being somewhat `wider than the portion `6 while the lowest portion 6bof the slot is shown as considerably wider than the portion 6am The slotportions 6 form guides for tongues 7a projecting downwardly from andpreferably formed integral with the movable member 7 of the vise, saidmovable member being provided lwith a movable `jaw 8. Coperating witheach tongue 7 is a removable extension 9, the upper portion of such eX-tension being shown as of substantially the same width as the tonguewhereby it may slide freely with the slot portion ofL and the lowerportion of each such extension being enlarged to provide an elongatedhead 9a the upper lateral edges whereof are adapted to engage beneaththe shoulder 6c while the head is free to slide within the slotted porachamber 1l4 projecting upwardly from the bottom thereof, said chamberbeing located between the tongues Gand providing side walls 7b, a rearwall 7c and a front wall 7d extending transversely of said. member, the

jaw 8 `being secured to. the last mentioned wall. The bottoms of thewalls7b and 7c and the bottoms of the sides of the vmovable member areadapted to slide upon the bed plate l.

The walls 7c and 7 d are provided with cylindrical aperturesconstituting bearings for a screw shaft l2, the front end l2a vof saidshaft being shown as of smaller diameter than the rear end and a collarl2b being detachably connected, as by a pin 13, to the said shaftimmediately in front of the rear bearing. Between the bearings, the bodyof the shaft is provided with a heavy thread 12C, constituting a screw.

Mounted on the screwvis a nut comprising an Ainner Vinternally threadedbushing 14C, having a flange 11a at its rear end, and an externalrectangular sleeve 15, the said bushing having a driving connectionwithsaid sleeve whereby the bushing and sleeve will move in unison throughthe rotation of the screw. The sleeve 15 is provided with a pair oftrunnions 15a projecting laterally from the central portion thereof,said trunnions forming a. bearing for a pawl. This pawl may beconveniently formed oftwo symmetrical members 16, each comprising an armhaving -a bushing 16:L whereby it may be applied to ya trunnion, thelower end of each arm having a projection extending at right angles tothe body thereof, as indicated at 16h, the portions 161 constituting thepawl proper and the pawl members being connected by means of a bolt 17tted in one o-f such lateral projections lb'and threaded into the other.The lower end of this Vpawl is adapted to coperate with the rack o-rratchet teeth 5.

A pair of pins 18 are mounted in the base of the movable member 7, eachprojecting inwardly above and on opposite sides of the rack 4e andimmediately above the same. These pins coperate with the pawl in amanner to be described hereinafter. M

The rear end of the screw shaft is -provided withv a clutch collar 19cooperating with the collar 13 to prevent relative longitudinal movementbetween the screw and the movable vise member. Rotatably mounted on therear end ofthe screw shaft is a handle 20, said handle being movablealong the shaft and having a clutch member 21 adapted to coperate withthe clutch collar 19 to provide a driving connection between the handleand the screw shaft.

With the parts constructed and arranged as described the operation willbe as follows:

VAn article having been inserted between jaws 3 and 8, the movablemember including the jaw 8 may be slid by hand upon the bed plate 1until the jaw 8 is in substantial engagement with such article, the pins18 traveling with said movable member and the pawl riding over the teethof the ratchet or rack. The operator then grasps the handle 20, movingit into driving relation to the clutch member 19 and with a left-handedscrew such as shown in the drawings,'turns `the vhandle in :acounter-clockwise direction.

If the pawl proper is not in actualengagement with the vertical shoulderof a tooth the rotation ofthe screw will impart a backw'ardv movement tothe nut 14, 15 until such time as the pawl abuts against such shoulderto lock the nut against movement. Further movement ofthe nutl issuspended by such engagement and further Vrotation [of the screw causesthe movable member Vto be thrust forwardly, the screw being rotateduntil the article is firmly clamped between the jaws 8 and 8, thepositionor the parts being shown in Fig. 1. W hen it is desired torelease the article, the handle 2O is rotated in the opposite direction.This causes the nut 14, 15 to move forward-ly upon the screw and, beforethe nut shall have reachedV the front end of the chamber 11, the pins 18will have engaged the arms 16 respectively thereabove to trip the pawl,asshown in Fig. 3. The operator can then grasp the movable member, andmove the'fsame rearwardly by" hand, the pawl being lifted clear of therack teeth. The pawl may be set in operative relation to the rack merelyby revolving theV handle 2O in the appropriate-vdirection..A

It will be seen that the pawl, the ratchet or rack, the pinsv 18 and thescrew 12 afford means by which the movable clamping member may be lockedagainst rearward movement in any position to which it may have beenadjusted toward the' fixed clamping member 3; also that, 4when themovable clamping member shall have been adjusted by hand to approximateclamping position,

further movement of said movable `clamping Y v the movable member to beoperated in the reverse directionV by hand-and that Ythe screw 12 andnut 141, 15 constitute the means for` securing ,the` reverse relativemove-AV ments between the pawl and the movable clamping member. Y,

As rust or the accumulation of sediment may prevent the pawl fromdroppinginto. place when Vreleasedrfrom the pins 18,1` have interposed aspring 22 between eachV arm or member 16 .of the pawl andthe guidewayformed thereabove by the side -of the top of the chamber 11 and the sidewall- 7b thereof, the top ofjsaid'chamber has a central depressedportion 15b 'cooperating with the nut -sleeve 15 and also coperatingVwith the walls '75 tov form said guideways.

ofv locking device'` cooperating with-.theAV pawl; nor doI` propose tolimit my inveniio npropose to be limited to anyparticularstyle Y tionexcept as such limitations may appear in the claims hereto annexed ormay be rendered necessary by the state of the prior art.

Having thus Adescribed. my invention, what I claim is l. In a device ofthe character described, the combination of a bed, a pair of clampingmembers carried by said bed, one of said members being movable towardand from the other, a screw carried by such movable member, a nutmounted on said screw and provided with a pair of trunnions, a pawlhaving arms pivoted on said trunnions, a rack carried by said bed andcooperating with said pawl, and a pair of pins carried by the movablemember and each projecting beneath an arm of said pawl and adapted toengage such arm through the movement of the nut along said screw.

2. In a device of the character described, the combination of a bed, apair of clamping members mounted thereon one of said members beingmovable toward and from the other, a screw supported by the movablemember, a nut comprising an internally threaded bushing mounted on saidscrew, and a sleeve "surrounding said bushing and provided with asupport, a branched pawl pivoted on said support, a rack having inclinedteeth mounted von said bed in opera tive relation to said pawl, and apawl-engaging device carried by such Vmovable member and extendingbetween theipawl and the rack and adapted to disengage the pawl from theteeth of said rack when the said nut shall have traveled a predetermineddistance on said screw.

3. In a device of the character described,

the combination of a bed, a pair of clamping members carried by saidbed, one or' said members being movable toward and from theJ other, ascrew carried by such movable member, a nut mounted on said screw andprovided with a pair of trunnions, a pawl having arms journaled on saidtrunnions, a rack carried by said bed and coperating with said pawl, apair of pins carried by the movable member and each projecting beneathan arm of said pawl and adapted to engage such arm through the movementof the nut along said screw, and a spring cooperating with each arm ofsaid pawl and tending to move the pawl into engagement with said rack.

4. In a device of the character described, the combination of a bed, apair of clamping members mounted thereon, one of said members beingmovable toward and from the other, a screw supported by the movablemember, a nut comprising an internally threaded bushing mounted on saidscrew and a sleevel surrounding said bushing and .provided withtrunnions, a pawl having arms journaled on said trunnions, a rackmounted on said bed in operative relation to said pawl, pawl-engagingdevices carried byV such movable member and extending between the armsof the pawl and the rack and adaptedto disengage the pawl from the teethof said rack when the said nut shall have traveled a predetermineddistance on said screw, and a spring coperating with said pawl andtending to move the pawl into engagement with said rack.

In testimony whereof, I hereunto ax my signature.

FREDERICK W. PETERS.

